Dust-guard.



a. w. BURNETT.

DUST sumo. APPLICATION HLED JAN. I5. 1917.

Patented I Dec. 18, 1917.

2 SHEETS-SHEET I.

'R. W. BURNETT.

DUS-T GUARD.

I urucmou mm mn z's. 1911.

1,250, l 38. Patented Dec. 18, 1917.

2 SHEETS-SHEET 2- {If/1%??? Q Q g W Zine/607v UNITED STATES PATENT onnrcn.

Brennan w. nogrmrr, or cirrcaeo, rumors. 4 y

' DUST-GUARD.

To all whom it may concern: Be it known that I, RIC1IARD W. BURNETT, a citizen of the United States, residing at Chi go, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Dust-Guards, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates to improvements in dust guards.

One object of the invention is to provide a dust guard for railway cars which will be durable and eflicient and which may be manufactured at relatively small expense.

Another object of the invention is to provide a dust guard of the type above indicated which will not disintegrate in use or break when being applied or taken off.

' Other objects of the invention are to provide a dust guard having means to prevent the ard from being held out of proper positlon by accumulations'of dirt atthe bottom of the slot in which the guard is placed;

to provide a dust guard having integral surrounding the axle meansthereon for yieldingly holding it in position and preventing undue, vibration thereof; and to provide a dust guard having portions ofits periphery of a width. corresponding substantially to the width of the topening or pocket in which it is received,

e dust guard at its eing of appreciably lesser thickness and adapted to have additional plies of fabric or other flexible ma terial appliedthereto for repair purposes.

In the drawing forming a part of this specification, Figure 1 is a sectional view of a journal box showing my dust guard i position on the car axle. Fig. 2 is an elevaq tional view of the dust guard proper. And Fig. 3 is a vertical section taken substantially on the line 3-3 of Fig. 2. 4: is a view corresponding to Fig. 3, but illustrating a. somewhat different embodiment of .the invention. Figs. 5 and 6 are views corresponding'respectively with Figs. 2 and 3 and illustrating a still further embodiment of the invention, Fig. 6 being taken on the line 6-6 of'Fig. 5. I

In the drawing, and referring to the structure illustrated in Figs. 1, 2 and 3, 10 denotes a journal box of the usual construction, 11 ajeurnal, 12 a bearing, and 13 the Specification of Letters Patent. I Application filed January 15, 1517. Serial No. 142,415.

portions immediately Patented Dec. 18, 1917.

slot or pocket formed in the journal box in which is adapted to, be received the dust guard designated generally bythe reference A.. As is well known, the dimensions of the slots, or pockets 13 are standardized by the Master Qar Builders rules and regulations and my invention, in all of its various forms,

contemplates a dust guard which will be adapted for the standardized recesses pro v1ded therefor.

My improved dust guard A, as shown, 1

comprises a substantially. rectangular sheet grdplate of metal 14 forming the main or 0 y edges of the plate 14 being flanged or bent as indicated at 15-15 and the top and bot- .tom edges 16 and 17 being also flanged to the same side as the. flanges 15-15. The

flanges 15, 16 and 17 are made to correspond substantially with the width of the slot 13 1 1n the journal box so that the dust guard will revented. from undu'e movement therein in ines par-' substantially'fill the slot and be allel to the axis of the journal. Furthermorefthe flanges 15, 16 and 17 add materially to the strengthv and rigidity of the dust guard. The plate 14 is provided with a central opening, as indicated at 18, which portion of the dust guard, the side opening 18 is appreciably'larger than the diameterof the axle. Secured to the plate I or frame 14 are two or more plies 19-19 of any suitable flexible material such as leather,

vegetable fiber, cloth, orother textile material, said plies 19.-19 being also centrally recessed as indicated at 20, the latter recess 20 corresponding to the diameter of the axle.

and forming a close yieldable fit therewith and adapted to prevent dust from passing into the journal box. In order to secure the fabric or other material, above described, which forms the gasket of the dust guard,

-,the frame portion 14 is provided with a -ser1es of mtegral tongues or tangs 21 arranged substantially in a rectangle, the tongues 21 belng-first struck up to a position at right angles to the main portions of the plate 14, as indicated at 21 in Fig. 3. After the gasket material is laid in position, the tongues 21 are then bent against the gasket material to pinch the latter in position. As

additional means of holding the gasket material, the plate maybe burred or indentedaround the edge of the opening 18, as indicated at 18}. From the preceding description, it wlll be seen that the attaching this, thin or cutting edge, the dust guard will .not be held up in that the edges 15? means for the gasket are formed integral with the main portion of the guard and the gasket is attached by a very simple operation. a

' By referring to Figs. 2 and 3, it will be noted that the lower flange 17 of the guard is provided at its extreme edge with a downwardly and vertically extending thin edge 22 which is adapted to act substantially as a knife edge and cut its way into any dirt or other foreign matter that may accumulate in the bottom of the slot 13. By means of diflerent positions due to accumulation of dirt in the slot, as has heretofore been one of the disadvantages of dust guards used.

Referring to Figs. 2 and 3 it will be seen of the side flanges 15 are turned inwardly toward the journal and at an angle to the main ortion of said flanges so as to provide a yie the adjacent. wall of when the guard is inserted in position, thereby preventing the guard from rattling or vibrating and maintaining the main por-,

tion of the plate 14 snugly against the opposite wall of the slot or pocket.

In the construction illustrated in Fig. 4, I have shown the tongues 121 as spot-welded to the main or body portion 114 of the plate, the tongues being bent down against the gasket material in the same manner as previously described. for the structure illustrated in Figs. 1, 2, and 3. Inthis form, it is apparent that there are no openings in the metallic frame in back of the dust guard so that the possibility of dirt passing through thedust guard at portions removed from the journal is positively prevented. 11 said structure illustrated in Fig. 4, the lower flange edge 117 thereof is inclined downwardly in orderto provide a; spring hearing against the side of the slot 13. The dirt cutting edge 122 is retained as in the other form. In this construction also, the top flange 116 is preferably provided with a curled edge 24: by which the dust guard may I be readily pulled out of the journal box by means of a hook or other suitable tool.

In the construction illustrated in Figs. 5 and 6, the main or'body portion of the dust guard 214: is formed similarly to portion thereof, no flange is provided and the lower edge-222 of the plate, and bottom edges 222 of the side flanges are depended upon to cut 'nto whatever accumulations may be in the recess. In this form, the gasket material 19 is secured to the frame preferably by a metallic ring 221, which is riveted or welded to the main portion 214:, and

which also may be burr-ed or indented at spaced points, as indicated at 221, to better grip the gasket increasing thethic of the slot in the journalbox which receives the ding pressure against, the slot or pocket 13,

i that illus-. trated 1n Figs. 1, 2 and 3 except at the lower material. By means of thehatc es cumference of the opening that receives the journal.

It will be noted that a characteristic which is common to all of the forms of dust ards hereinbefore described resides in the fact thatthe thickness transversely of the guards around their periphery corresponds substantially to the width of the slot in the journal box which receives the guard and further that centrally of the dust guard, the thickness thereof is much less than around the periphery, thus adaptin the dust guards to have patches of flexi 1e material or additional plies thereof for wearing or strengthening pur oses, attached without ess guard.

Although I have herein shown and described what I now consider the preferred manner of carrying out myinvention, the

same is merely illustrative and I contem- 1 the top, the width of said flanges correspending substantially to the 'width of the usual opening provided for the reception of the dust guard, said plate having a thin edge at the bottom thereof placed vertically to thereby cut through accumulations in said recess.

2. As an article of manufacture, a dust 'a single piece of sheet 1 guard comprising metal plate flanged around some of its edges, the flanges extending substantially at right angles to the main body of the plate and of a width corresponding substantially to the width of the usual recess provided for the accommodation of the guard, said plate being centrally recessed, gasket material secured to said plate and extending inwardly of said recess, certain of said flanges being .yieldably pressed when the guard is inserted in position to thereby retain the guard in position and prevent undue vibration thereof.

3. A dust guard comprising a sheet metal plate of substantially rectangular shape, the vertical side edges of said plate being flanged, the width of said flanges corresponding to the width of the recess provided to accommodate the guard, said plate'havin'g a central openlng, pliable gasket material secured to said plate and extending inwardly of said opening, the gasket material having also an opening to accommodate the car axle, means for securing the gasket material to the plate, said plate having a lower vertically exalong its vertical sides and across beyond the width i of the claims aptending sharp edge adapted to cut into accu mulations in the bottom of said recess in the journal box.

4. A dust guard of substantially rectangular shape in its finished form and comprising, a sheet metal plate having some of its .edges of a width corresponding substantially to the width of the usual I'BCBSS PIOVIdGd the vertical side edges thereof provided with flanges extending substantially perpendicular to the main body of the plate, the ex-- treme edges of said flanges being bent .at an angle to the main portion of the flanges to thereby effect a yielding pressure between the dust guard and the side walls of the usual opening provided in the journal box toreceive the dust guard.

6. A dust guard comprising, a single sheet of metal having the vertically extending side rim portions thereof formed of such a width as to correspond. substantially to the width of the usual recess provided in a journal box for the dust guard, said dust guard being of substantially rectangular formation and having the rim portions formed integrally with said plate.

7. A dust guard comprising, a single piece of metal having a central perforation, pliable gasket material carried bysaid sheet, the dust guard being of substantially rectangular form, said sheet being bent along its two vertical edges and along its top edge to thereby increase the width of the dust guardalong said three edges to correspond substantially to the width of the usual recess provided in a journal box to receive the dust guard. a

8. A dust guard of the character described comprising, a single piece of sheet metal having a central perforation, pliable gasket material carried by said sheet, said I sheet having integral portions overlapping the gasket material for retaining the latter in proper position, the dust guard havingparallel vertical sideedges and said sheet having the portions thereof at said edges bent to increase the efiective thickness of the dust guard to correspond substantially to the width of the usual recess provided in a journal box to receive the dust guard.

In witness that I claim the foregoing I have hereunto subscribedjmy name this 10th day of January, 1917.

RICHARD w. BURNETT. 

